Re: Legendre Polynomials
- To: mathgroup at smc.vnet.net
- Subject: [mg56086] Re: Legendre Polynomials
- From: AES <siegman at stanford.edu>
- Date: Fri, 15 Apr 2005 04:47:25 -0400 (EDT)
- Organization: Stanford University
- References: <d3g8kd$smh$1@smc.vnet.net> <d3ls13$sgv$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
In evaluating Legendre (and other) polynomials and polynomial sums for large orders or arguments with an earlier version of Mathematica (maybe 3 or 4?) I encountered what I took to be round-off errors when using real arguments, which disappeared when I limited myself to integer or rational arguments. If I wanted to evaluate one of these functions for an argument of 1.001, I used 1001/1000 as the argument and the obvious errors went away.